i need help on the following problem: "carol drops a stone into a mine shaft 122.5 m deep. How soon after she drops the stone does she hear it hit the bottom of the shaft?" i know that the acceleration is 9.8m/s^2 but i can't use it as speed in the speed=distance/time equation please help me. thanx
Break the problem into two parts. Calculate t_{1}, the time it takes the stone to fall from her hand to the bottom of the well. Then find t_{2}, the time it takes the sound to travel from the bottom of the well to the top. The total time is just t_{1} + t_{2}.